Jenny Pedigo of Sew Kind of Wonderful designs some very interesting quilts. Her quilting is incredibly detailed and dramatic. I can make her quilts ... don't even attempt her quilting. :-)
Her Urban Abacus really appealed to me and needing to make a quilt for a new baby girl on Mr. Pirate's side of the family gave me the impetus to use that design.
Yes, it's curved seams. The main block is an "abacus bead" and the curved edges are VERY gentle. A confident beginner should be able to navigate this block successfully.
But, just in case you have qualms, I have put in some verbiage and pictures about how I attacked the curved seam aspect.
There is a vertical "string" between each bead and when I was on a shop hop with a quilting buddy recently, I saw the zipper novelty fabric that she had picked out. I realized that fussy-cutting the zippers would be the PERFECT connector between the beads! I think it really turned out cute.
If you wander on over to the Urban Abacus webpage, you can read about it all and see lots of pictures.